Star Delta Starter

The Star Delta starter is the most basic starting method for minimizing the inrush starting current of an induction motor. For typical operation, the starter can be utilized with all squirrel-cage induction motors that are delta connected.

The decrease of the high motor current reduces the motor’s starting torque. Star-delta starting is thus particularly ideal for drives that are not loaded until after starting. The starting time is longer than with direct starting, which is noticeable when driving higher inertial loads.